That part came from a psychiatrist. It isn’t every guy for sure. But the % still interested drops a lot somewhere around 60 or something. And the average age expectancy for men in the us is 76.5. So the ones in their 80’s and still alive have a higher chance of still being interested mainly because the others died off. My personal opinion is that longevity and libido are commonly correlated. But I have no real data for that.